Heretic. How could you possibly suggest that this is just a name change
This a wholesale change of everything, I believe that they even considered conducting a review of what people wanted in a god and what he should be called. It's only the all-encompassing and pan-religious connotation that the word god has that saved it!
More seriously, in many ways (at least for the military) this is a bit of a re-statement of what we used to do before Ben McDhui with a few extra words added in. For our civil colleagues I think that this will have a bigger impact, particularly the ability to request DS when flying VFR.
Generally, I think mil will be okay with CAP 774 and have a complete b0ll ache with CAP 413 and it'll be the other way around on the civil side of the fence.